<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>自定义函数与调用</title>
</head>
<body>
    <script>
        function getSum(n,m){
            var sum=0;
            for (let i = n; i <=m; i++) {
                sum+=i;
                
            }
            return sum;
        }
        console.log("5-10之间的数相加为:"+getSum(5,10));
        console.log("100-1000之间的数相加为:"+getSum(100,1000));
    </script>
</body>
</html>